Lightweight gas block for a firearm



FIG. 1 is a left, front perspective view of a lightweight gas block for a firearm, showing my new design;

FIG. 2 is a right, front perspective view thereof;

FIG. 3 is a left, bottom perspective view thereof;

FIG. 4 is a left, top perspective view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a right side view thereof; and,

FIG. 10 is a left side perspective view thereof.

The broken lines shown throughout the various figures depict additional structures that form no part of the claimed design. 

CLAIM The ornamental design for a lightweight gas block for a firearm, as shown and described. 